Kp, it's desirable for the tweeters on the mains and the center to be as close to the same height as possible, but the more important factor is that the tweeters point at or slightly below ear level. The 16" stand does this well for the M22s and tilting whatever speaker you plan to use for a center slightly downward from the top of the TV will do that for the center as well.


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Enjoy the music, not the equipment.